package com.itHsuSE.smallchange.oop;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;

public class SmallChangeSysOOP {

    boolean loop = true;
    Scanner sc = new Scanner(System.in);
    String key = "";

    String details = "--------------零钱通明细--------------";
    double money = 0;
    double balance = 0;
    Date date = null;
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
    String note = "";

    public void mainMenu() {
        do{
            System.out.println("==============零钱通菜单==============");
            System.out.println("\t\t\t1 零钱通明细");
            System.out.println("\t\t\t2 收益入账");
            System.out.println("\t\t\t3 收费");
            System.out.println("\t\t\t4 退      出");

            System.out.println("请选择(1-4)：");
            key=sc.next();

            switch (key){
                case "1":
                    this.detail();
                    break;
                case "2":
                    this.income();
                    break;
                case "3":
                    this.pay();
                    break;
                case "4":
                    this.exit();
                    break;
                default:
                    System.out.println("选择有误，请重新选择");
                    break;
            }

        }while (loop);
        System.out.println("====退出零钱通项目====");
    }

    public void detail() {
        System.out.println(details);
    }

    public void income(){
        System.out.println("收益入账金额：");
        money=sc.nextDouble();
        if(money<=0){
            System.out.println("收益入账金额需要大于0");
            return;
        }

        balance+=money;
        date=new Date();
        details+="\n收益入账\t"+money+"\t"+sdf.format(date)+"\t"+balance;
    }

    public void pay(){
        System.out.println("消费金额：");
        money=sc.nextDouble();
        if(money<=0||money>balance){
            System.out.println("你的消费金额应该在0-"+balance);
            return;
        }
        System.out.println("消费说明：");
        note=sc.next();
        balance-=money;
        date=new Date();
        details+="\n"+note+"\t-"+money+"\t"+sdf.format(date)+"\t"+balance;
    }

    public void exit(){
        String choice="";
        while(true){
            System.out.println("你确定要退出吗？y/n");
            choice=sc.next();
            if("y".equals(choice)||"n".equals(choice)){
                break;
            }
        }
        if(choice.equals("y")){
            loop=false;
        }
    }
}
